Submission #561555

#	Time	Username	Problem	Language	Result	Execution time	Memory
561555		HappyPacMan	Detecting Molecules (IOI16_molecules)	C++14	100 / 100	45 ms	5316 KiB

molecules

#include "molecules.h"
#include <bits/stdc++.h>
using namespace std;

vector<int> find_subset(int l,int u,vector<int> w){
    vector<pair<int,int> > vec;
    for(int i=0;i<w.size();i++){
        vec.emplace_back(w[i],i);
    }
    sort(vec.rbegin(),vec.rend());
    vector<int> res;
    long long sum = 0;
    for(int i=0;i<vec.size();i++){
        sum += vec[i].first;
        res.emplace_back(vec[i].second);
        if(sum >= l){
            break;
        }
    }
    for(int i=0;i<res.size()&&res.size()<=vec.size()-i-1;i++){
        if(sum <= u){
            break;
        }
        sum += vec[vec.size()-i-1].first - w[res[i]];
        res[i] = vec[vec.size()-i-1].second;
    }
    if(l <= sum && sum <= u){
        return res;
    }
    vector<int> blank;
    return blank;
}

Compilation message (stderr)

molecules.cpp: In function 'std::vector<int> find_subset(int, int, std::vector<int>)':
molecules.cpp:7:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    7 |     for(int i=0;i<w.size();i++){
      |                 ~^~~~~~~~~
molecules.cpp:13:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   13 |     for(int i=0;i<vec.size();i++){
      |                 ~^~~~~~~~~~~
molecules.cpp:20:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   20 |     for(int i=0;i<res.size()&&res.size()<=vec.size()-i-1;i++){
      |                 ~^~~~~~~~~~~

• Subtask 1: 9 / 9
• Subtask 2: 10 / 10
• Subtask 3: 12 / 12
• Subtask 4: 15 / 15
• Subtask 5: 23 / 23
• Subtask 6: 31 / 31